46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
const formatTime = date => {
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const year = date.getFullYear();
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const month = date.getMonth() + 1;
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const day = date.getDate();
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const hour = date.getHours();
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const minute = date.getMinutes();
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const second = date.getSeconds();
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return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':');
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};
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const formatNumber = n => {
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n = n.toString();
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return n[1] ? n : '0' + n;
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};
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const fsm = wx.getFileSystemManager();
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const FILE_BASE_NAME = 'tmp_base64src';
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const base64src = function(base64data) {
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return new Promise((resolve, reject) => {
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const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || [];
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if (!format) {
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reject(new Error('ERROR_BASE64SRC_PARSE'));
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}
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const filePath = `${wx.env.USER_DATA_PATH}/${FILE_BASE_NAME}.${format}`;
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const buffer = wx.base64ToArrayBuffer(bodyData);
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fsm.writeFile({
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filePath,
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data: buffer,
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encoding: 'binary',
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success() {
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resolve(filePath);
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},
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fail() {
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reject(new Error('ERROR_BASE64SRC_WRITE'));
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},
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});
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});
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};
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module.exports = {
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formatTime: formatTime,
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base64src,
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}; |